Am Montag, 3. September 2012 00:02:43 UTC+2 schrieb Dave Nadler:

PS: Hans - Further questions about the the IMI double-seat version:
- suitable for one-person assembly ?
I think one could do it, but I have nevery tried it, because in club there are always other people around and we just use it so that we do not have to carry the heavyt wing

- spring strong enough to offset the weight of the wing ?
Yes (it is not a spring but a gas strud)

- have you used this on a Duo (much bigger chord than Arcus) ?
No, but there is much room for adjustment of teh fixation.

- do you have to go under the wing to adjust or lock the height ?
Yes, this feature is much more ellegantly solved with the Lange design. But I see no safety risk in this.